(19)
(11) EP 1 401 122 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.12.2005 Bulletin 2005/51

(43) Date of publication A2:
24.03.2004 Bulletin 2004/13

(21) Application number: 03255645.8

(22) Date of filing: 10.09.2003
(51) International Patent Classification (IPC)7: H04B 7/08, H04L 27/26
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 17.09.2002 JP 2002270483

(71) Applicant: ALPS ELECTRIC CO., LTD.
Ota-ku Tokyo 145 (JP)

(72) Inventors:
  • Ohtaki, Yukio
    Ota-ku, Tokyo 145 (JP)
  • Iijima, Kouta
    Ota-ku, Tokyo 145 (JP)
  • Suzuki, Takeo
    Ota-ku, Tokyo 145 (JP)

(74) Representative: Kensett, John Hinton 
Saunders & Dolleymore, 9 Rickmansworth Road
Watford, Hertfordshire WD18 0JU
Watford, Hertfordshire WD18 0JU (GB)

   


(54) Orthogonal frequency division multiplexing receiver


(57) An OFDM receiver has four antennas (11, 21, 51, 61) or more for receiving an OFDM modulated high frequency signal, and plural OFDM demodulators (75) for inputting a base band signal of a time area thereto on the basis of the high frequency signal and outputting the base band signal of a frequency area, wherein the OFDM demodulators are arranged every plural antenna groups with two or more of the antennas as one group, and a signal is diversity-synthesized by a first phase shifter (31, 71) until the base band signal of the time area is inputted to each of the OFDM demodulators, and the base band signal of the frequency area is diversity-synthesized by a second phase shifter (92).






Search report